Up for grabs is a 50mm DR extension focusing tube accessory. The snaps onto M3 to allow Macro shooting with 50mm Summicron DR lens. DR lens un screws and screws onto tube
Todd - I'm almost certain that it's the focus section of a 90mm f2.8 (version 1) - did you check to see if it fit a 50 DR lens head? I have both lenses and never head of this "extension tube"
It is a valuable item if you have a lens head with the same or close code and a damaged mount.
Repost if you can find a two numeric digit code.
Repost if there is not a code noteing 'no code'... Don't know if they did matched helioids.
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